US Bridges

US 20 over BNSF Railway

Fair

Hot Springs County, Wyoming · Shoshoni - Thermopolis · Structure no. CCB

Built
1959
66 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
214 ft
3 main spans
Daily traffic
2,711
2024 count
Owner
State
State Highway Agency

About this bridge

US 20 over BNSF Railway is a steel stringer/multi-beam or girder carrying US 20 over BNSF Railway in Hot Springs County, Wyoming. It was built in 1959, so it is 66 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,711 vehicles a day, roughly 13% of them trucks, projected to reach 3,795 by 2043. The structure is 214 ft (65.1 m) long and 35 ft wide. If it were closed, the detour would be 90.1 mi (145 km).

Location

Open in Google Maps
CarriesUS 20
CrossesBNSF Railway
LocationShoshoni - Thermopolis
RouteU.S. Route 20
CountyHot Springs County
StateWyoming
Coordinates43.59445, -108.21461
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length214 ft (65.1 m)
Longest span68 ft (20.7 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,711 (2024)
Projected traffic3,795 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed90.1 mi (145 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$30,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 20 over BNSF Railway built?

It was built in 1959, making it 66 years old in 2025.

What condition is US 20 over BNSF Railway in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does US 20 over BNSF Railway carry?

About 2,711 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is US 20 over BNSF Railway?

The structure is 214 ft (65.1 m) long with a longest span of 68 ft (20.7 m) and a deck 35 ft wide.

Who owns US 20 over BNSF Railway?

It is owned by the State Highway Agency.